{"schema":"threatline.record/2","record":{"id":"CVE-2026-83526","aliases":[],"summary":"FV Player 8 <= 8.1.7 - Authenticated (Subscriber+) Arbitrary File Upload via videos[].fv_wp_flowplayer_field_src Parameter","details":"The FV Player 8 plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 8.1.7 via the check_mimetype function. This is due to insufficient file type validation in check_mimetype(), which writes attacker-supplied remote file content to the public uploads directory before any MIME or extension check, combined with a missing capability check on new player creation. This makes it possible for authenticated attackers, with subscriber-level access and above, to upload files that may be executable, which makes remote code execution possible. This requires successfully exploiting a race condition.","categories":["Unclassified"],"product":"FV Player 8","vendor":"foliovision","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-83526","source_modified_at":"2026-10-11T16:55:17.940Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"FV Player 8","vendor":"foliovision","versions":[{"version":"0","status":"affected","lessThanOrEqual":"8.1.7","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":8.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00644,"percentile":0.50282,"score_date":"2026-10-23"},"published_at":"2026-10-10T05:30:58.064Z","modified_at":"2026-10-11T16:55:17.940Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-83526","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-11T16:55:17.940Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-83526","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/5c75cb7b-1ebe-411c-8664-848d741e40d4?source=cve"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L105"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L148"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/checker.php#L181"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L46"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L1102"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db.php#L1173"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/models/db-video.php#L855"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/controller/editor.php#L36"},{"source":"CVE List","url":"https://plugins.trac.wordpress.org/browser/fv-player/trunk/controller/frontend.php#L1211"},{"source":"CVE List","url":"https://github.com/foliovision/fv-wordpress-flowplayer/releases/tag/8.1.8"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-11T16:43:03.315494Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-11T16:55:17.940Z","content_hash":"f089496e6889217020daa7840dcd94198141360668a86d05a49be7eeedfd4679"}}